TDK-MLCC Part Number Breakdown

What does the suffix 1.60 call out in TDK parts like C3216X7R1C475M/1.60

The 1.60 is calling out the nominal thickness of the part in mm. See TDK part number breakdown for their MLCCs here: https://product.tdk.com/en/products/common/pdf/mlcc_partnumber_description.pdf